TECH TIP: Never change the hammer spring only or misfires are certain. You must balance your springs for reliable ignition. The CGW Reduced Power Firing Pin Spring is the perfect match for our HS-12000.
NOTE: HS-12000 is a competition spring and is not recommended for any self-defense application. HS-12000 is designed to be used with Federal and Winchester primers, other brands of primers may not run 100%. We suggest you thoroughly range test this spring with other primers to verify reliable ignition.